Testo 540 - Lux Meter

Here’s the information about the testo 540 light meter, formatted properly in points:

• Purpose: Quick and easy measurements of both artificial and natural light, ideal for workplace lighting conditions.
• Spectral Sensitivity: The sensor is modeled on the spectral sensitivity of the human eye.
• Features:
  • Hold function for capturing measurements.
  • Min/Max values for tracking light variations.
  • Protective cap for safe storage.
• Weight: 95 g (including batteries and protective cap).
• Dimensions: 133 x 46 x 25 mm.
• Operating Temperature: 0 to +50 °C.
• Protection Class: IP40 (dust protected, no protection against liquids).
• Battery Type: 2 AAA micro batteries.
• Battery Life: 200 hours (average, without display illumination).
• Storage Temperature: -40 to +70 °C.

Light Measurement Specifications:

• Measuring Range:

  • 0 to 99,999 Lux.
  • 0 to 9,300 ftc (foot-candles).

• Accuracy: ±3 Lux or ±3% (compared to a reference instrument at 90° light irradiation).

• Resolution:

  • 1 Lux (0 to 19,999 Lux).
  • 10 Lux (remaining range).

• Measuring Rate: 0.5 s (measurement refresh rate).

• Warranty: 1 Year.